Top Analyst Upgrades and Downgrades (AMCX, AMGN, BHI, CPST, CHKP, DUK, EIX, MNST, NTAP, OSG, P, PHI, BTU, WDC, YHOO, BKCC, FSC, QLYS, MCC, PNNT)
Jon OggThese are some of the top analyst upgrades, downgrades and initiations seen in Wall St. research notes this Tuesday. AMC Networks Inc. (NASDAQ: AMCX) cut to Neutral at JPMorgan. Amgen Inc.…